… | |
… | |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
180 | static cond_t reqwait = X_COND_INIT; |
180 | static cond_t reqwait = X_COND_INIT; |
181 | |
181 | |
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|
182 | #if !HAVE_PREADWRITE |
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|
183 | /* |
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|
184 | * make our pread/pwrite emulation safe against themselves, but not against |
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185 | * normal read/write by using a mutex. slows down execution a lot, |
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186 | * but that's your problem, not mine. |
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187 | */ |
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|
188 | static mutex_t preadwritelock = X_MUTEX_INIT; |
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189 | #endif |
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|
190 | |
182 | typedef struct etp_worker |
191 | typedef struct etp_worker |
183 | { |
192 | { |
184 | /* locked by wrklock */ |
193 | /* locked by wrklock */ |
185 | struct etp_worker *prev, *next; |
194 | struct etp_worker *prev, *next; |
186 | |
195 | |
… | |
… | |
330 | |
339 | |
331 | static void etp_atfork_child (void) |
340 | static void etp_atfork_child (void) |
332 | { |
341 | { |
333 | ETP_REQ *prv; |
342 | ETP_REQ *prv; |
334 | |
343 | |
335 | while (prv = reqq_shift (&req_queue)) |
344 | while ((prv = reqq_shift (&req_queue))) |
336 | ETP_DESTROY (prv); |
345 | ETP_DESTROY (prv); |
337 | |
346 | |
338 | while (prv = reqq_shift (&res_queue)) |
347 | while ((prv = reqq_shift (&res_queue))) |
339 | ETP_DESTROY (prv); |
348 | ETP_DESTROY (prv); |
340 | |
349 | |
341 | while (wrk_first.next != &wrk_first) |
350 | while (wrk_first.next != &wrk_first) |
342 | { |
351 | { |
343 | etp_worker *wrk = wrk_first.next; |
352 | etp_worker *wrk = wrk_first.next; |
… | |
… | |
371 | |
380 | |
372 | pthread_once (&doinit, etp_once_init); |
381 | pthread_once (&doinit, etp_once_init); |
373 | |
382 | |
374 | want_poll_cb = want_poll; |
383 | want_poll_cb = want_poll; |
375 | done_poll_cb = done_poll; |
384 | done_poll_cb = done_poll; |
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|
385 | |
|
|
386 | return 0; |
376 | } |
387 | } |
377 | |
388 | |
378 | X_THREAD_PROC (etp_proc); |
389 | X_THREAD_PROC (etp_proc); |
379 | |
390 | |
380 | static void etp_start_thread (void) |
391 | static void etp_start_thread (void) |
… | |
… | |
698 | |
709 | |
699 | #if !HAVE_PREADWRITE |
710 | #if !HAVE_PREADWRITE |
700 | # define pread eio__pread |
711 | # define pread eio__pread |
701 | # define pwrite eio__pwrite |
712 | # define pwrite eio__pwrite |
702 | |
713 | |
703 | /* |
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|
704 | * make our pread/pwrite safe against themselves, but not against |
|
|
705 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
706 | * but that's your problem, not mine. |
|
|
707 | */ |
|
|
708 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
709 | |
|
|
710 | static ssize_t |
714 | static ssize_t |
711 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
715 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
712 | { |
716 | { |
713 | ssize_t res; |
717 | ssize_t res; |
714 | off_t ooffset; |
718 | off_t ooffset; |
… | |
… | |
775 | |
779 | |
776 | #if !HAVE_READAHEAD |
780 | #if !HAVE_READAHEAD |
777 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
781 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
778 | |
782 | |
779 | static ssize_t |
783 | static ssize_t |
780 | eio__readahead (int fd, off_t offset, size_t count, worker *self) |
784 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
781 | { |
785 | { |
782 | size_t todo = count; |
786 | size_t todo = count; |
783 | dBUF; |
787 | dBUF; |
784 | |
788 | |
785 | while (todo > 0) |
789 | while (todo > 0) |
… | |
… | |
901 | int memlen = 4096; |
905 | int memlen = 4096; |
902 | int memofs = 0; |
906 | int memofs = 0; |
903 | int res = 0; |
907 | int res = 0; |
904 | |
908 | |
905 | X_LOCK (wrklock); |
909 | X_LOCK (wrklock); |
|
|
910 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
906 | self->dirp = dirp = opendir (req->ptr1); |
911 | self->dirp = dirp = opendir (req->ptr1); |
907 | req->flags |= EIO_FLAG_PTR2_FREE; |
912 | req->flags |= EIO_FLAG_PTR2_FREE; |
908 | req->ptr2 = names = malloc (memlen); |
913 | req->ptr2 = names = malloc (memlen); |
909 | X_UNLOCK (wrklock); |
914 | X_UNLOCK (wrklock); |
910 | |
915 | |
… | |
… | |
943 | |
948 | |
944 | if (errno) |
949 | if (errno) |
945 | res = -1; |
950 | res = -1; |
946 | |
951 | |
947 | req->result = res; |
952 | req->result = res; |
|
|
953 | } |
|
|
954 | |
|
|
955 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
956 | # define msync(a,b,c) ENOSYS |
|
|
957 | #endif |
|
|
958 | |
|
|
959 | int |
|
|
960 | eio__mtouch (void *mem, size_t len, int flags) |
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|
961 | { |
|
|
962 | intptr_t addr = (intptr_t)mem; |
|
|
963 | intptr_t end = addr + len; |
|
|
964 | #ifdef PAGESIZE |
|
|
965 | const intptr_t page = PAGESIZE; |
|
|
966 | #else |
|
|
967 | static intptr_t page; |
|
|
968 | |
|
|
969 | if (!page) |
|
|
970 | page = sysconf (_SC_PAGESIZE); |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
|
|
974 | |
|
|
975 | if (addr < end) |
|
|
976 | if (flags) /* modify */ |
|
|
977 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
|
|
978 | else |
|
|
979 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
|
|
980 | |
|
|
981 | return 0; |
948 | } |
982 | } |
949 | |
983 | |
950 | /*****************************************************************************/ |
984 | /*****************************************************************************/ |
951 | |
985 | |
952 | #define ALLOC(len) \ |
986 | #define ALLOC(len) \ |
… | |
… | |
1039 | |
1073 | |
1040 | /*****************************************************************************/ |
1074 | /*****************************************************************************/ |
1041 | |
1075 | |
1042 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1076 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1043 | { |
1077 | { |
1044 | etp_init (want_poll, done_poll); |
1078 | return etp_init (want_poll, done_poll); |
1045 | } |
1079 | } |
1046 | |
1080 | |
1047 | static void eio_api_destroy (eio_req *req) |
1081 | static void eio_api_destroy (eio_req *req) |
1048 | { |
1082 | { |
1049 | free (req); |
1083 | free (req); |
… | |
… | |
1111 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1145 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1112 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1146 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1113 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1147 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1114 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1148 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1115 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1149 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1116 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1150 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1117 | |
1151 | |
1118 | case EIO_READLINK: ALLOC (NAME_MAX); |
1152 | case EIO_READLINK: ALLOC (NAME_MAX); |
1119 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1153 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1120 | |
1154 | |
1121 | case EIO_SYNC: req->result = 0; sync (); break; |
1155 | case EIO_SYNC: req->result = 0; sync (); break; |
1122 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1156 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1123 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1157 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
1158 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
|
|
1159 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1124 | |
1160 | |
1125 | case EIO_READDIR: eio__scandir (req, self); break; |
1161 | case EIO_READDIR: eio__scandir (req, self); break; |
1126 | |
1162 | |
1127 | case EIO_BUSY: |
1163 | case EIO_BUSY: |
1128 | #ifdef _WIN32 |
1164 | #ifdef _WIN32 |
… | |
… | |
1167 | case EIO_NOP: |
1203 | case EIO_NOP: |
1168 | req->result = 0; |
1204 | req->result = 0; |
1169 | break; |
1205 | break; |
1170 | |
1206 | |
1171 | case EIO_CUSTOM: |
1207 | case EIO_CUSTOM: |
1172 | req->feed (req); |
1208 | ((void (*)(eio_req *))req->feed) (req); |
1173 | break; |
1209 | break; |
1174 | |
1210 | |
1175 | default: |
1211 | default: |
1176 | req->result = -1; |
1212 | req->result = -1; |
1177 | break; |
1213 | break; |
… | |
… | |
1200 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1236 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1201 | { |
1237 | { |
1202 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1238 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1203 | } |
1239 | } |
1204 | |
1240 | |
|
|
1241 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1242 | { |
|
|
1243 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
1244 | } |
|
|
1245 | |
|
|
1246 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
1247 | { |
|
|
1248 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
1249 | } |
|
|
1250 | |
1205 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1251 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1206 | { |
1252 | { |
1207 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1253 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1208 | } |
1254 | } |
1209 | |
1255 | |
… | |
… | |
1328 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
1374 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
1329 | } |
1375 | } |
1330 | |
1376 | |
1331 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1377 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1332 | { |
1378 | { |
1333 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int2 = (long)dev; SEND; |
1379 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
1334 | } |
1380 | } |
1335 | |
1381 | |
1336 | static eio_req * |
1382 | static eio_req * |
1337 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1383 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1338 | { |
1384 | { |
… | |
… | |
1364 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1410 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1365 | } |
1411 | } |
1366 | |
1412 | |
1367 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1413 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
1368 | { |
1414 | { |
1369 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1415 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
1370 | } |
1416 | } |
1371 | |
1417 | |
1372 | #endif |
1418 | #endif |
1373 | |
1419 | |
1374 | eio_req *eio_grp (eio_cb cb, void *data) |
1420 | eio_req *eio_grp (eio_cb cb, void *data) |